code analyzis: find code not in subs, rearrange code

[szabgab]

When looking at a script or module I never saw before I am never sure there is no code between functions:

sub a {
}

die "hello world";

sub b {
}

Also END, BEGIN etc blocks are relevant.

I would like to make it easy to find any such code and maybe
even rearrange the file so I'll have all the non-sub stuff at the top.

[azawawi]

Added to PadrePluginFix TODO